Streaks - The to-do list that helps you form good habits.
VLC Media Player - VLC is a free and open source cross-platform multimedia player and framework.
Taskful - Deadlines, meet your match.
AIMP - AIMP : Free Audio Player : Официальный сайт программы
Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
foobar2000 - An advanced freeware audio player for the Windows platform.